Home / 7,968.90-11,000.80-4,986.66

Finding the Fourth Proportional to 7,968.90, 11,000.80 and 4,986.66

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Solution

The fourth proportional to 7,968.90, 11,000.80 and 4,986.66 is: 6,883.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.90 : 11,000.80 = 4,986.66 : x
  2. Step 2: Convert to fraction form
    7,968.90/11,000.80 = 4,986.66/x
  3. Step 3: Cross multiply
    7,968.90x = 11,000.80 × 4,986.66
  4. Step 4: Simplify right side
    7,968.90x = 54,857,249.33
  5. Step 5: Solve for x
    x = 54,857,249.33/7,968.90
  6. Step 6: Final answer
    x = 6,883.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.